De-sulfurization of nox adsorber catalyst in a diesel engine exhaust system
CA 2572853 C · Owner: International Engine Intellectual Property Company, Llc · Inventors: Barasa, Patrick D.; O'Connor, Justin M.; Wang, Xinlei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
De-sulfurizing a NOx adsorber catalyst (48) without significantly increasing the temperature of exhaust gases leaving the engine exhaust manifold (42) by using a diesel oxidation catalyst (46) between the exhaust manifold (42) and the NOx adsorber catalyst (48) to elevate exhaust gas temperature entering the NOx adsorber catalyst (48) to suitable de-sulfurizing temperature through control of certain aspects of engine operation (24 28, 52).
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed June 28, 2005 and granted January 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 28, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.